First 
                  Flight | 
                Model | 
                Military
                  Number | 
                Name | 
               
              
                | 1943 | 
                  | 
                RB-1 | 
                Conestoga | 
               
              | 
               
              
                 | 
               
              | 
           | 
          The
            Edward G. Budd Manufacturing Co., famed for stainless steel
            railroad cars, was asked by the US Navy to develop the Conestoga, a
            stainless steel cargo aircraft, in 1942.  Contracts to produce
            this aircraft were cancelled after 17 were built. |